CODEWITHSUNDEEP
android
michael
michael

Reputation: 110550

onBackPressed() of my activity does not get called when my activity pops up a dialog

I have implementation onBackPressed(), it works when there is no popup alert dialog from my activity. But when my activity pops up a dialog, onBackPressed() never get called.

public void onBackPressed() {
        super.onBackPressed();
// more implementation.
}

How can I detect back key is pressed by user when a dialog is pop up?

Thank you.

Upvotes: 2

Views: 5138

Answers (4)

Bryan
Bryan

Reputation: 3667

You could also create your own custom Pop-up message class which extends AlertDialog.Builder, and handle the user selection on the pop-up window (i.e. Yes/No, Submit/Cancel buttons) using a Java Interface.

That's the way I did it, so I could handle warnings and errors, other alerts using my own custom alert pop-up message window.

I didn't have to do anything special in the custom Pop-up message class to handle the back-button being pressed.

However, I did handle the back-button being pressed in the activity class that calls my custom pop-up message class.

/**
   * onKeyDown method
   * 
   * Executes code depending on what keyCode is pressed.
   * 
   * @param int keyCode
   * @param KeyEvent
   *          event KeyEvent object
   * 
   * @return true if the code completes execution, false otherwise
   * 
   */
  @Override
  public boolean onKeyDown(int keyCode, KeyEvent event) {
    super.onKeyDown(keyCode, event);
    switch (keyCode) {
    case KeyEvent.KEYCODE_BACK:
      //handle the back-key press here

    default:
      return false;
    }
  }// end onKeyDown

Upvotes: 0

Diego Torres Milano
Diego Torres Milano

Reputation: 69198

Well, in that case Dialog#onBackPressed() will be called, which is expected behavior.

Upvotes: 2

BenDr0id
BenDr0id

Reputation: 156

Something like this, should do the job. 

public boolean onKeyDown(int keyCode, KeyEvent event) 
{
    if (keyCode == KeyEvent.KEYCODE_BACK)
    {
        yourpopup.dismiss();  // or whatever you want todo here
        return true;
    }

    return super.onKeyDown(keyCode, event);
}

Upvotes: 2

Kurtis Nusbaum
Kurtis Nusbaum

Reputation: 30825

That's because your Activity doesn't have focus at that point. You'll have to add a button listener to the dialog that pops up.

Upvotes: 0

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